The WR will take a little work to get it running right, like a pipe, airbox mods, cam timing, etc. But basically, it's a YZ with an e-start. And I believe the WR is faster, due to the Wide Ratio trans.
Thinking of replacing my YFZ (stolen). :bawl Which should I go with the Honda or Yamaha. I really, really liked the YFZ. But don't want to get out run by the new kid on the block. I also know Yama has a patent on the 5 valve design. Honda only has 4. Let me know. later